The T-Mobile G1 started the Android charge in October 2008, but T-Mobile has been comparatively quiet on the next generation smartphone front. The carrier finally delivered a great phone in the Samsung Vibrant but it still isn’t exactly the phone that keyboard-enthusiasts seek.

The T-Mobile G2 may be the phone to silence critics. Previously rumored as the G1 Blaze, the G2 has been officially coined by a new T-Mobile teaser site touting the first phone designed specifically for its HSPA+ network. The fast-moving G2 will reach 4G speeds in 50 markets, covering more than 85 million people.

The teaser site is now accepting registration for people interested in getting updates. If you’re looking to finally put that G1 to rest, add your name to the list. You just may get word in the next couple of months when your contract is set to expire.

T-Mobile is proud to have launched the world’s first Android-powered phone, the T-Mobile G1, which captured the imagination of developers and consumers alike nearly two years ago. Now, we are readying its successor – the T-Mobile G2 with Google. Delivering tight integration with Google services, the G2 will break new ground as the first smartphone specifically designed for our advanced HSPA+ network, which delivers today’s available 4G speeds. In the coming weeks we’ll share more details about the G2, including information on how current T-Mobile customers can get exclusive first access. Visit http://g2.t-mobile.com to register for updates.